Module metrics

Per-attempt metrics collected by Database::instrumented_run.

The report is a list of AttemptMetrics, one per transaction attempt, in order: a retried transaction keeps everything it did in its earlier attempts. Operation counters come from the always-on UsageSnapshot of the attempt, so instrumentation only adds the timings, the outcome and the aggregates on top of what the binding already counts.

Structs

• AttemptMetrics
  Everything recorded about a single transaction attempt.
• MetricKey
  Unique key for a metric: name + labels
• MetricsReport
  The metrics of a whole instrumented_run: the detail of every attempt plus the aggregates that only make sense for the run as a whole.
• TransactionInfo
  Transaction-level information that spans attempts
• TransactionMetrics
  Collects the metrics of a transaction, attempt after attempt.

Enums

• AttemptOutcome
  How a transaction attempt ended.
• ConflictKeys
  The conflicting key ranges of a transaction attempt.

Type Aliases

• Labels
  Label key-value pairs for metrics